Experimental demonstration of tunable negative phase velocity and negative refraction in a ferromagnetic/ferroelectric composite metamaterial

Hongjie Zhao; Lei Kang; Ji Zhou; Qian Zhao; Longtu Li; Liang Peng; Yang Bai

doi:10.1063/1.3033397

Experimental demonstration of tunable negative phase velocity and negative refraction in a ferromagnetic/ferroelectric composite metamaterial

Hongjie Zhao, Lei Kang, Ji Zhou, Qian Zhao, Longtu Li, Liang Peng, Yang Bai

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

A tunable left-handed transmission is demonstrated experimentally in a ferromagnetic/ferroelectric composite metamaterial (CMM) consisting of an array of yttrium iron garnet (YIG) rods combined with barium strontium titanate (BST) rods. We observed a passband in the CMM within the overlap of the stop bands of YIG rods alone and BST rods alone. Both measured phase velocity and refractive index of the CMM are shown to be negative at the relevant frequency range. The frequency showing left handedness can be adjusted continuously, dynamically, and reversibly by an applied magnetic field with a sensitive response of 3.5 GHz/kOe.

Original language	English (US)
Article number	201106
Journal	Applied Physics Letters
Volume	93
Issue number	20
DOIs	https://doi.org/10.1063/1.3033397
State	Published - 2008

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3033397

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title = "Experimental demonstration of tunable negative phase velocity and negative refraction in a ferromagnetic/ferroelectric composite metamaterial",

abstract = "A tunable left-handed transmission is demonstrated experimentally in a ferromagnetic/ferroelectric composite metamaterial (CMM) consisting of an array of yttrium iron garnet (YIG) rods combined with barium strontium titanate (BST) rods. We observed a passband in the CMM within the overlap of the stop bands of YIG rods alone and BST rods alone. Both measured phase velocity and refractive index of the CMM are shown to be negative at the relevant frequency range. The frequency showing left handedness can be adjusted continuously, dynamically, and reversibly by an applied magnetic field with a sensitive response of 3.5 GHz/kOe.",

author = "Hongjie Zhao and Lei Kang and Ji Zhou and Qian Zhao and Longtu Li and Liang Peng and Yang Bai",

note = "Funding Information: This work is supported by the National Science Foundation of China under Grant Nos. 50425204, 50572043, 50632030, 50621201, and 10774087.",

year = "2008",

doi = "10.1063/1.3033397",

language = "English (US)",

volume = "93",

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T1 - Experimental demonstration of tunable negative phase velocity and negative refraction in a ferromagnetic/ferroelectric composite metamaterial

AU - Zhao, Hongjie

AU - Kang, Lei

AU - Zhou, Ji

AU - Zhao, Qian

AU - Li, Longtu

AU - Peng, Liang

AU - Bai, Yang

N1 - Funding Information: This work is supported by the National Science Foundation of China under Grant Nos. 50425204, 50572043, 50632030, 50621201, and 10774087.

PY - 2008

Y1 - 2008

N2 - A tunable left-handed transmission is demonstrated experimentally in a ferromagnetic/ferroelectric composite metamaterial (CMM) consisting of an array of yttrium iron garnet (YIG) rods combined with barium strontium titanate (BST) rods. We observed a passband in the CMM within the overlap of the stop bands of YIG rods alone and BST rods alone. Both measured phase velocity and refractive index of the CMM are shown to be negative at the relevant frequency range. The frequency showing left handedness can be adjusted continuously, dynamically, and reversibly by an applied magnetic field with a sensitive response of 3.5 GHz/kOe.

AB - A tunable left-handed transmission is demonstrated experimentally in a ferromagnetic/ferroelectric composite metamaterial (CMM) consisting of an array of yttrium iron garnet (YIG) rods combined with barium strontium titanate (BST) rods. We observed a passband in the CMM within the overlap of the stop bands of YIG rods alone and BST rods alone. Both measured phase velocity and refractive index of the CMM are shown to be negative at the relevant frequency range. The frequency showing left handedness can be adjusted continuously, dynamically, and reversibly by an applied magnetic field with a sensitive response of 3.5 GHz/kOe.

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Experimental demonstration of tunable negative phase velocity and negative refraction in a ferromagnetic/ferroelectric composite metamaterial

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